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Finding the Fourth Proportional to 296.32, 408.32 and 282.20

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Solution

The fourth proportional to 296.32, 408.32 and 282.20 is: 388.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.32 : 408.32 = 282.20 : x
  2. Step 2: Convert to fraction form
    296.32/408.32 = 282.20/x
  3. Step 3: Cross multiply
    296.32x = 408.32 × 282.20
  4. Step 4: Simplify right side
    296.32x = 115,227.90
  5. Step 5: Solve for x
    x = 115,227.90/296.32
  6. Step 6: Final answer
    x = 388.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.